I agree with most comments here - this is really a needed feature (e.g. when orgs are renamed etc.)
I agree that advanced search options would increase value of Delve a lot.
In addition to basix search functions such as "", +, hashtag etc., it would be great to have a filtered or multiple-step search to be able to search for experts and organization within the company. Because ppl can fill in their skills and expertise in their profile, but one cannot search specifically for this expertise. Often ppl are not looking for names in their company, they are looking for an SME.
Please let us know if you plan this!
Adding to this suggestion: in addition to the above mentioned usage metrics, it would be great, if admins could see how many employees of a particular organization have filled in/updated their profiles. Updating one's profile is one of the first steps of Delve user adoption and would be a good indicator how many ppl have started using it. Would be great to see a sort "completion rate" per organization unit of a company.